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Organic luminescent material, preparation method and organic luminescent device containing organic luminescent material
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A light-emitting material, organic technology, applied in the direction of light-emitting materials, organic chemistry, electric solid devices, etc., can solve the problems of color purity, efficiency and thermal stability, difficult to use materials for display, blue color purity is not enough, etc., to achieve excellent Electroluminescence properties, simple synthesis method, and effect of long device life
Inactive Publication Date: 2019-02-22
JILIN OPTICAL & ELECTRONICS MATERIALS
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Problems solved by technology
However, because the blue color purity of the material is not high enough, it is difficult to apply the material to a high-quality display
Moreover, there is an urgent need to research and develop such materials because of the problems of color purity, efficiency and thermal stability
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preparation example Construction
[0055] Step 1, the preparation of intermediate 1
[0056] Add compound 1, N-bromosuccinimide and dichloromethanesolvent into the reaction vessel, stir the mixture at room temperature, when the reaction is complete, add water to it, extract the mixture with dichloromethane, and filter the extract under reduced pressure , the obtained compound is recrystallized from ethanol to obtain intermediate 1;
[0057] Step 2, the preparation of intermediate 2
[0058] Intermediate 1, Pd 2 (dba) 3 , biboronic acid pinacol ester and potassium acetate were dissolved in 1,4-dioxane, in a nitrogenatmosphere, the reactant was refluxed and stirred for reaction, after the reaction was completed, it was extracted with dichloromethane and distilled water, and then sub The extracted product was dried with magnesiumsulfate and filtered, then the filtered product was concentrated under reduced pressure, and the concentrated product was purified by silica gelcolumn chromatography to obtain inter...
preparation example 1
[0080] [Preparation Example 1] Preparation of Compound 1
[0081]
[0082] Preparation of intermediate A-1-1
[0083] Starting material SM-1-1 (71.9 mmol), starting material SM-2-1 (71.9 mmol), aluminum trichloride (107.85 mmol) were added to dichloromethane. The air was replaced with nitrogen three times, reacted at 50° C. overnight, and monitored by TLC. After the reaction was completed, it was cooled to room temperature under the protection of nitrogen. Add water and stir, use a separatory funnel for liquid separation, and keep the organic phase. Concentrate, and use ethanol for beating and washing to obtain intermediate A-1-1 (57.52 mmol, yield 80%).
[0084] Preparation of compound B-1-1
[0085] Add compound A-1-1 (57.52mmol), potassiumcarbonate (172.56mmol) and 2-butanone (300mL) into the reaction vessel, and heat to reflux. When the reaction was completed, it was concentrated under reduced pressure, and the obtained compound was recrystallized from ethanol (20...
preparation example 2
[0094] [Preparation Example 2] Preparation of Compound 5
[0095] According to the preparation method of compound 1, the replace with Synthesize intermediates according to synthetic route 1 Will replace with Will replace with Will replace with Compound 5 was prepared with a mass spectral value of 636.30.
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Abstract
The invention relates to the technical field of luminescent materials and specifically relates to an organic luminescent material, a preparation method and an organic luminescent device containing theorganic luminescent material. The invention provides the organic luminescent material with a novel structure, in order to solve the problems of routine techniques. The organic luminescent device withexcellent luminous efficiency and obviously improved service life can be realized. Compared with a conventional host material, the organic luminescent material provided by the invention has the advantages of capability of showing excellent electroluminescence property, long service life of device and suitable chromaticity coordinate. The organic luminescent device with high efficiency and long service life provided by the invention takes the organic luminescent material disclosed by the invention as an electroluminescence material. The preparation method of the organic luminescent material provided by the invention is simple and feasible in synthesis process and is capable of acquiring high-yield target products by controlling reaction temperature and time.
Description
technical field [0001] The invention relates to the technical field of luminescent materials, in particular to an organic luminescent material, a preparation method and an organic luminescent device containing the material. Background technique [0002] Organic electroluminescent devices have the characteristics of wide viewing angle, short response time, and low driving voltage, and can be used to realize full-color OLED displays through three organic electroluminescent materials (for red, green, and blue). It is important to develop electroluminescent materials with high efficiency and long lifetime to improve the overall characteristics of organic electroluminescent (EL) devices. Recently, the development of high-efficiency and long-life organic EL devices has become an urgent subject. The required properties for the host material are high purity, glass transition temperature and thermal decomposition temperature should be high enough to ensure thermal stability. In add...
Claims
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